pub fn u64_value(&self) -> u64 {
        match *self {
            Value::U64(ref value) => *value,
            _ => panic!("This is not a u64 field."),
        }
    }
/// Returns the u64-value, provided the value is of the `U64` type.
///
/// # Panics
/// If the value is not of type `U64`
Returns the u64-value, provided the value is of the `U64` type.
Returns the u64 - value provided the value is of the ` U64 ` type .
pub fn u64_value(&self) -> u64 {
        match *self {
            Value::U64(ref value) => *value,
            _ => panic!("This is not a u64 field."),
        }
    }
pub fn u64_value ( & self ) -> u64 { match * self { Value :: U64 ( ref value ) => * value , _ => panic ! ( " " ) , } }
Returns the u64-value, provided the value is of the `U64` type.
Returns the u64 - value provided the value is of the ` U64 ` type .
&self
&self
panics
If the value is not of type `U64`
If the value is not of type ` U64 `