public java.lang.String getSourceDescription() {
      java.lang.Object ref = sourceDescription_;
      if (!(ref instanceof java.lang.String)) {
        com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
        java.lang.String s = bs.toStringUtf8();
        sourceDescription_ = s;
        return s;
      } else {
        return (java.lang.String) ref;
      }
    }
<pre>
The descriptive name of the AWS's source this VM is connected to.
</pre>

<code>string source_description = 4;</code>

@return The sourceDescription.
java-vmmigration/proto-google-cloud-vmmigration-v1/src/main/java/com/google/cloud/vmmigration/v1/AwsVmDetails.java