astVariableDeclarator(iVarDecNode, retArr) {
    this.astGeneric(iVarDecNode.id, retArr);
    if (iVarDecNode.init !== null) {
      retArr.push('=');
      this.astGeneric(iVarDecNode.init, retArr);
    }
    return retArr;
  }
@desc Parses the abstract syntax tree for *Variable Declarator*
@param {Object} iVarDecNode - An ast Node
@param {Array} retArr - return array string
@returns {Array} the append retArr