Subtracts the @subtrahend from the @minuend. <note>This function does not work reliably if optional properties for caps are included on one caps and omitted on the other.</note>
#GstCaps to subtract
Return: the resulting caps
See Implementation
Subtracts the @subtrahend from the @minuend. <note>This function does not work reliably if optional properties for caps are included on one caps and omitted on the other.</note>