More documentation clean-up.
diff --git a/net/api/src/main/java/org/onlab/onos/net/provider/AbstractProvider.java b/net/api/src/main/java/org/onlab/onos/net/provider/AbstractProvider.java
new file mode 100644
index 0000000..d1c992f
--- /dev/null
+++ b/net/api/src/main/java/org/onlab/onos/net/provider/AbstractProvider.java
@@ -0,0 +1,24 @@
+package org.onlab.onos.net.provider;
+
+/**
+ * Base provider implementation.
+ */
+public abstract class AbstractProvider implements Provider {
+
+    private final ProviderId providerId;
+
+    /**
+     * Creates a provider with the supplier identifier.
+     *
+     * @param id provider id
+     */
+    protected AbstractProvider(ProviderId id) {
+        this.providerId = id;
+    }
+
+    @Override
+    public ProviderId id() {
+        return providerId;
+    }
+
+}