pub fn unsupported(operation: &'static str) -> Self {
        Error(ErrorInner::Unsupported {
            msg: operation,
            default: false,
        })
    }
/** Declare some structure as unsupported. */
Declare some structure as unsupported.
Declare some structure as unsupported .
pub fn unsupported(operation: &'static str) -> Self {
        Error(ErrorInner::Unsupported {
            msg: operation,
            default: false,
        })
    }
pub fn unsupported ( operation : & ' static str ) -> Self { Error ( ErrorInner :: Unsupported { msg : operation , default : false , } ) }
Declare some structure as unsupported.
Declare some structure as unsupported .
operation
&'static str