maybeTransformStatement_(maybeTransformedStatement) {
    // transform break/continue statements and their parents to state machines
    let breakContinueTransformed =
        new BreakContinueTransformer(this.stateAllocator_).
            transformAny(maybeTransformedStatement);
    if (breakContinueTransformed !== maybeTransformedStatement) {
      breakContinueTransformed = this.transformAny(breakContinueTransformed);
    }
    return breakContinueTransformed;
  }
transforms break/continue statements and their parents to state machines
@param {ParseTree} maybeTransformedStatement
@return {ParseTree}