protected boolean hasEndOfBlockFlow(Instruction instr) {

		if (instr.getFlowType() != RefType.FALL_THROUGH) {
			return true;
		}
		return referenceMgr.hasFlowReferencesFrom(instr.getMinAddress());
	}
Examine an instruction for out-bound flows which qualify it
as an end-of-block. 
@param instr
@return true if end-of-block flow exists from specified instruction.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/block/SimpleBlockModel.java