static Set<Integer> findReturnsAndThrows(final List<Instruction> instructions) {
        return find(instruction -> instruction.getType() == Instruction.InstructionType.RETURN || instruction.getType() == Instruction.InstructionType.THROW, instructions);
    }
static Set < Integer > findReturnsAndThrows ( final List < Instruction > instructions ) { return find ( instruction -> instruction . getType ( ) == Instruction . InstructionType . RETURN || instruction . getType ( ) == Instruction . InstructionType . THROW , instructions ) ; }
Searches for return instructions in the given instructions.

@param instructions The instructions where to search
@return The positions of all found return instructions