docs: function(cName){
          if(validate.isEmpty(cName)){
              validateParams._warn('ignoring invalid coercion name: ' + cName);
          }
          if(validate.isFunction(validateParams.coercions[cName])){
              return validateParams.coercions[cName];
          }else{
              validateParams._warn("no coercion named '" + cName + "' defined - ignoring");
          }
          return undefined;
      }