Mahesh Poojary S | 5afd06c | 2015-08-21 14:51:04 +0530 | [diff] [blame] | 1 | /*
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| 2 | * Copyright 2015 Open Networking Laboratory
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| 3 | *
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| 4 | * Licensed under the Apache License, Version 2.0 (the "License");
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| 5 | * you may not use this file except in compliance with the License.
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| 6 | * You may obtain a copy of the License at
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| 7 | *
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| 8 | * http://www.apache.org/licenses/LICENSE-2.0
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| 9 | *
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| 10 | * Unless required by applicable law or agreed to in writing, software
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| 11 | * distributed under the License is distributed on an "AS IS" BASIS,
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| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| 13 | * See the License for the specific language governing permissions and
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| 14 | * limitations under the License.
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| 15 | */
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| 16 | package org.onosproject.pcepio.types;
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| 17 |
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| 18 | import java.util.Objects;
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| 19 |
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| 20 | import org.jboss.netty.buffer.ChannelBuffer;
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| 21 | import org.onosproject.pcepio.protocol.PcepVersion;
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| 22 | import org.slf4j.Logger;
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| 23 | import org.slf4j.LoggerFactory;
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| 24 |
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| 25 | import com.google.common.base.MoreObjects;
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| 26 | import com.google.common.base.MoreObjects.ToStringHelper;
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| 27 |
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| 28 | /**
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| 29 | * Provides IPv6 Interface Address. REFERENCE :[RFC6119]/4.2.
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| 30 | */
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| 31 | public class IPv6InterfaceAddressTlv implements PcepValueType {
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| 32 |
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| 33 | protected static final Logger log = LoggerFactory.getLogger(IPv6InterfaceAddressTlv.class);
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| 34 |
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| 35 | public static final short TYPE = 12; //TDB18
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| 36 | public static final short LENGTH = 20;
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| 37 | public static final byte VALUE_LENGTH = 18;
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| 38 |
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| 39 | private static final byte[] NONE_VAL = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
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| 40 | public static final IPv6InterfaceAddressTlv NONE = new IPv6InterfaceAddressTlv(NONE_VAL);
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| 41 |
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| 42 | private static final byte[] NO_MASK_VAL = {(byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| 43 | (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF,
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| 44 | (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF, (byte) 0xFF};
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| 45 | public static final IPv6InterfaceAddressTlv NO_MASK = new IPv6InterfaceAddressTlv(NO_MASK_VAL);
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| 46 | public static final IPv6InterfaceAddressTlv FULL_MASK = NONE;
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| 47 |
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| 48 | private final byte[] rawValue;
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| 49 |
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| 50 | /**
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| 51 | * Constructor to initialize rawValue.
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| 52 | *
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| 53 | * @param rawValue IPv6 Interface Address Tlv
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| 54 | */
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| 55 | public IPv6InterfaceAddressTlv(byte[] rawValue) {
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| 56 | log.debug("IPv6InterfaceAddressTlv");
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| 57 | this.rawValue = rawValue;
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| 58 | }
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| 59 |
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| 60 | /**
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| 61 | * Returns newly created IPv6InterfaceAddressTlv object.
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| 62 | *
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| 63 | * @param raw IPv6 Interface Address
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| 64 | * @return object of IPv6InterfaceAddressTlv
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| 65 | */
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| 66 | public static IPv6InterfaceAddressTlv of(final byte[] raw) {
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| 67 | //check NONE_VAL
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| 68 | boolean bFoundNONE = true;
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| 69 | //value starts from 3rd byte.
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| 70 | for (int i = 2; i < 20; ++i) {
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| 71 | if (NONE_VAL[i] != raw[i]) {
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| 72 | bFoundNONE = false;
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| 73 | }
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| 74 | }
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| 75 |
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| 76 | if (bFoundNONE) {
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| 77 | return NONE;
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| 78 | }
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| 79 |
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| 80 | //check NO_MASK_VAL
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| 81 | boolean bFoundNoMask = true;
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| 82 | //value starts from 3rd byte.
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| 83 | for (int i = 2; i < 20; ++i) {
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| 84 | if (0xFF != raw[i]) {
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| 85 | bFoundNoMask = false;
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| 86 | }
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| 87 | }
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| 88 | if (bFoundNoMask) {
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| 89 | return NO_MASK;
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| 90 | }
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| 91 |
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| 92 | return new IPv6InterfaceAddressTlv(raw);
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| 93 | }
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| 94 |
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| 95 | /**
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| 96 | * Returns value of IPv6 Interface Address.
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| 97 | *
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| 98 | * @return rawValue raw value
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| 99 | */
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| 100 | public byte[] getBytes() {
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| 101 | return rawValue;
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| 102 | }
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| 103 |
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| 104 | /**
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| 105 | * Returns value of IPv6 Interface Address.
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| 106 | *
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| 107 | * @return rawValue raw value
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| 108 | */
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| 109 | public byte[] getValue() {
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| 110 | return rawValue;
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| 111 | }
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| 112 |
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| 113 | @Override
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| 114 | public PcepVersion getVersion() {
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| 115 | return PcepVersion.PCEP_1;
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| 116 | }
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| 117 |
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| 118 | @Override
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| 119 | public short getType() {
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| 120 | return TYPE;
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| 121 | }
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| 122 |
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| 123 | @Override
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| 124 | public short getLength() {
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| 125 | return LENGTH;
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| 126 | }
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| 127 |
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| 128 | @Override
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| 129 | public int hashCode() {
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| 130 | return Objects.hash(rawValue);
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| 131 | }
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| 132 |
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| 133 | @Override
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| 134 | public boolean equals(Object obj) {
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| 135 | if (this == obj) {
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| 136 | return true;
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| 137 | }
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| 138 | if (obj instanceof IPv6InterfaceAddressTlv) {
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| 139 | IPv6InterfaceAddressTlv other = (IPv6InterfaceAddressTlv) obj;
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| 140 | return Objects.equals(rawValue, other.rawValue);
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| 141 | }
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| 142 | return false;
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| 143 | }
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| 144 |
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| 145 | @Override
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| 146 | public int write(ChannelBuffer c) {
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| 147 | int iLenStartIndex = c.writerIndex();
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| 148 | c.writeShort(TYPE);
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| 149 | c.writeShort(LENGTH);
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| 150 | c.writeBytes(rawValue);
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| 151 | return c.writerIndex() - iLenStartIndex;
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| 152 | }
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| 153 |
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| 154 | /**
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| 155 | * Reads the channel buffer and returns object of IPv6InterfaceAddressTlv.
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| 156 | *
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| 157 | * @param c input channel buffer
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| 158 | * @return object of IPv6InterfaceAddressTlv
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| 159 | */
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| 160 | public static IPv6InterfaceAddressTlv read20Bytes(ChannelBuffer c) {
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| 161 | byte[] yTemp = new byte[20];
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| 162 | c.readBytes(yTemp, 0, 20);
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| 163 | return IPv6InterfaceAddressTlv.of(yTemp);
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| 164 | }
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| 165 |
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| 166 | @Override
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| 167 | public String toString() {
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| 168 | ToStringHelper toStrHelper = MoreObjects.toStringHelper(getClass());
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| 169 |
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| 170 | toStrHelper.add("Type", TYPE);
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| 171 | toStrHelper.add("Length", LENGTH);
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| 172 |
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| 173 | StringBuffer result = new StringBuffer();
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| 174 | for (byte b : rawValue) {
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| 175 | result.append(String.format("%02X ", b));
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| 176 | }
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| 177 | toStrHelper.add("Value", result);
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| 178 |
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| 179 | return toStrHelper.toString();
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| 180 | }
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| 181 | }
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