     return result
   }
   
+  /// The value of "QUERY_STRING".
+  public var queryString: String? {
+    return EnvironmentVariables.default["QUERY_STRING"]
+  }
+  
   /// The User Agent.
   public var userAgent: String? {
     return EnvironmentVariables.default["HTTP_USER_AGENT"]

/* *************************************************************************************************
 Client.swift
   © 2017-2018 YOCKOW.
     Licensed under MIT License.
     See "LICENSE.txt" for more information.
 ************************************************************************************************ */

      return result
    }
    
    guard let queryString = self.queryString else { return nil }
    var result = _parse(queryString)
    
    // Handle Posted Data
