code: function isPaddedArgument (node) {
          var parentArray = node.parent().arguments ? node.parent().arguments : node.parent().elements
          var idx = parentArray.indexOf(node)
          if (idx === 0) { // first arg
            if (prePreChar === '(' && preChar === '(' && postChar === ')') { // already padded
              return true
            }
          } else if (idx === parentArray.length - 1) { // last arg
            if (preChar === '(' && postChar === ')' && postPostChar === ')') { // already padded
              return true
            }
          } else { // middle arg
            if (preChar === '(' && postChar === ')') { // already padded
              return true
            }
          }
          return false
        }
docs: assuming this node is an argument to a function or an element in an array, return true if it itself is already padded with parentheses