public com.google.devtools.cloudtrace.v2.TruncatableString getSourceVersion() {
        if (sourceVersionBuilder_ == null) {
          return sourceVersion_ == null
              ? com.google.devtools.cloudtrace.v2.TruncatableString.getDefaultInstance()
              : sourceVersion_;
        } else {
          return sourceVersionBuilder_.getMessage();
        }
      }
<pre>
The version of the deployed source code (up to 128 bytes).
</pre>

<code>.google.devtools.cloudtrace.v2.TruncatableString source_version = 7;</code>

@return The sourceVersion.
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/StackTrace.java