public java.lang.String getUsername() {
          java.lang.Object ref = username_;
          if (!(ref instanceof java.lang.String)) {
            com.google.protobuf.ByteString bs = (com.google.protobuf.ByteString) ref;
            java.lang.String s = bs.toStringUtf8();
            username_ = s;
            return s;
          } else {
            return (java.lang.String) ref;
          }
        }
<pre>
Required. The user name of the Google account.
</pre>

<code>string username = 1 [(.google.api.field_behavior) = REQUIRED];</code>

@return The username.
java-websecurityscanner/proto-google-cloud-websecurityscanner-v1beta/src/main/java/com/google/cloud/websecurityscanner/v1beta/ScanConfig.java