IfModifiedSince   *time.Time `json:"ifModSince,omitempty" msg:",omitempty"`
	IfUnModifiedSince *time.Time `json:"ifUnmodSince,omitempty" msg:",omitempty"`
	IfRange           string     `json:"ifRange,omitempty" msg:",omitempty"`
	IfPartNumber      int        `json:"ifPartNumber,omitempty" msg:",omitempty"`
}

// IsSet tells the cache lookup to avoid sending a request
func (r *CondCheck) IsSet() bool {

				}
				*z.IfUnModifiedSince, err = dc.ReadTime()
				if err != nil {
					err = msgp.WrapError(err, "IfUnModifiedSince")
					return
				}
			}
		case "IfRange":
			z.IfRange, err = dc.ReadString()
			if err != nil {
				err = msgp.WrapError(err, "IfRange")
				return
			}
		case "IfPartNumber":
			z.IfPartNumber, err = dc.ReadInt()
			if err != nil {
				err = msgp.WrapError(err, "IfPartNumber")
				return
			}