ProgramNode getChild(String childName) {
		if (getAllowsChildren()) {
			int nchild = getChildCount();
			for (int i = 0; i < nchild; i++) {
				ProgramNode c = (ProgramNode) getChildAt(i);
				if (c.getName().equals(childName)) {
					return c;
				}
			}
		}
		return null;
	}
Get the node named childName.
@param childName the name
@return null if the node does not allow children, or the name was
not found.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/programtree/ProgramNode.java