private void removeParentToChildLookup(@Nonnull String name, @Nonnull String parentName) {
		Set<String> children = parentToChild.get(parentName);
		if (children != null)
			children.remove(name);

		// Clear any cached relationships in the vertex and the parent vertex.
		InheritanceVertex parentVertex = getVertex(parentName);
		InheritanceVertex childVertex = getVertex(name);
		if (parentVertex != null) parentVertex.clearCachedVertices();
		if (childVertex != null) childVertex.clearCachedVertices();
	}
Remove a references from the given child class to the parent class.

@param name
		Child class name.
@param parentName
		Parent class name.
recaf-core/src/main/java/software/coley/recaf/services/inheritance/InheritanceGraph.java