code: function( string ){
              if( string[ string.length -1 ] !== $this.slash.get()) string = string + $this.slash.get();
  
              return string;
          }
docs: Adds the value of "slash.string" to the end of the provided string,
  unless the last character is already the value of "slash.string".
  @param {string} string
  @returns {string}