ProgramNode getChild(ProgramNode parentNode, String name) {
		int nchild = parentNode.getChildCount();
		for (int i = 0; i < nchild; i++) {
			ProgramNode child = (ProgramNode) parentNode.getChildAt(i);
			if (child.getName().equals(name)) {
				return child;
			}
		}
		return null;
	}
Find the child with the given name in parentNode.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramDnDTree.java