public Builder clearFrame() {
        if (frameBuilder_ == null) {
          frame_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000001);
          onChanged();
        } else {
          frameBuilder_.clear();
        }
        return this;
      }
<pre>
Stack frames in this call stack.
</pre>

<code>repeated .google.devtools.cloudtrace.v2.StackTrace.StackFrame frame = 1;</code>
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/StackTrace.java