private static boolean isFlowOp(PcodeOp op) {
		int opcode = op.getOpcode();
		return opcode == PcodeOp.CALL || opcode == PcodeOp.CALLIND || opcode == PcodeOp.CBRANCH ||
			opcode == PcodeOp.BRANCH || opcode == PcodeOp.BRANCHIND;
	}
Return default flow-type without terminator
@param inst the instruction
@return call/jump flow type or null
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/symbol/RefTypeFactory.java