public Builder mergeModule(com.google.devtools.cloudtrace.v2.TruncatableString value) {
      if (moduleBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && module_ != null
            && module_
                != com.google.devtools.cloudtrace.v2.TruncatableString.getDefaultInstance()) {
          getModuleBuilder().mergeFrom(value);
        } else {
          module_ = value;
        }
      } else {
        moduleBuilder_.mergeFrom(value);
      }
      if (module_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
For example: main binary, kernel modules, and dynamic libraries
such as libc.so, sharedlib.so (up to 256 bytes).
</pre>

<code>.google.devtools.cloudtrace.v2.TruncatableString module = 1;</code>
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/Module.java