function toTRBL(value) {
    return _readValueToProps(value, {
        top: 'y',
        right: 'x',
        bottom: 'y',
        left: 'x'
    });
}
Converts the given value into a TRBL object.
@param value - If a number, set the value to all TRBL component,
 else, if an object, use defined properties and sets undefined ones to 0.
 x / y are shorthands for same value for left/right and top/bottom.
@returns The padding values (top, right, bottom, left)
@since 3.0.0