@java.lang.Override
      public void writeTo(com.google.protobuf.CodedOutputStream output) throws java.io.IOException {
        if (line_ != 0L) {
          output.writeInt64(1, line_);
        }
        if (column_ != 0L) {
          output.writeInt64(2, column_);
        }
        if (length_ != 0L) {
          output.writeInt64(3, length_);
        }
        getUnknownFields().writeTo(output);
      }
<pre>
The number of bytes of source code making up this stack trace element.
</pre>

<code>int64 length = 3;</code>

@return The length.
java-workflow-executions/proto-google-cloud-workflow-executions-v1/src/main/java/com/google/cloud/workflows/executions/v1/Execution.java