public void pushBuild(int buildnum) {
		point = point.getSubState(buildnum);
		depth += 1;
		breadcrumb[depth] = 0;
		setupPoint();
	}
While walking the OpTpl's in order, follow a particular BUILD directive into its respective Constructor and ContructTpl
Use popBuild to backtrack
@param buildnum is the operand number of the BUILD directive to follow
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/app/plugin/processors/sleigh/OpTplWalker.java