public Builder mergeFrom(com.google.devtools.cloudtrace.v2.TruncatableString other) {
      if (other == com.google.devtools.cloudtrace.v2.TruncatableString.getDefaultInstance())
        return this;
      if (!other.getValue().isEmpty()) {
        value_ = other.value_;
        bitField0_ |= 0x00000001;
        onChanged();
      }
      if (other.getTruncatedByteCount() != 0) {
        setTruncatedByteCount(other.getTruncatedByteCount());
      }
      this.mergeUnknownFields(other.getUnknownFields());
      onChanged();
      return this;
    }
<pre>
Represents a string that might be shortened to a specified length.
</pre>

Protobuf type {@code google.devtools.cloudtrace.v2.TruncatableString}
java-trace/proto-google-cloud-trace-v2/src/main/java/com/google/devtools/cloudtrace/v2/TruncatableString.java