text: // Copyright (c) 2016 Simon Fell
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the "Software"),
  // to deal in the Software without restriction, including without limitation
  // the rights to use, copy, modify, merge, publish, distribute, sublicense,
  // and/or sell copies of the Software, and to permit persons to whom the
  // Software is furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included
  // in all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  //
  
  #import <Foundation/Foundation.h>
  
  /** defines helpers to deserialize common XSD simple types. */
  @interface NSString (ZKSimpleTypes)
  
  -(NSNumber *)ZKBoolean;
  -(NSDecimalNumber *)ZKDecimal;
  -(NSNumber *)ZKInteger;
  -(NSNumber *)ZKFloat;
  -(NSNumber *)ZKDouble;
  -(NSDate *)ZKDateTime;
  -(NSDate *)ZKTime;
  -(NSDate *)ZKDate;
  -(NSData *)ZKBase64Binary;
  
  @end