whole_func_string: function updateIndent() {
              var str = ''
              for (var idx = 0; idx < this.indentLevel; idx++) {
                  str += this.indentUnit
              }
              this.currentIndent = str
          }
func_code_string: function updateIndent() {
              var str = ''
              for (var idx = 0; idx < this.indentLevel; idx++) {
                  str += this.indentUnit
              }
              this.currentIndent = str
          }
func_documentation_string: updates current indentation spaces depending on current indentation level