protected static boolean isLineLabel(OpTpl template) {
		// Overloaded: PTRADD is high p-code
		return template.getOpcode() == PcodeOp.PTRADD;
	}
Check if the given template represents a line label

<p>
The {@link PcodeOp#PTRADD} op is ordinarily only use in high p-code. We reuse (read "abuse")
it to hold a display slot for line labels later referred to in {@link PcodeOp#BRANCH} and
{@link PcodeOp#CBRANCH} ops. This method checks if the given op template is one of those
placeholders.

@param template the op template
@return true if it's a line label
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/util/pcode/AbstractPcodeFormatter.java