public boolean isIndirectFamilyMember(@Nonnull InheritanceVertex vertex) {
		return isIndirectFamilyMember(getFamily(true), vertex);
	}
@param vertex
		Supposed vertex that belongs in the family.

@return {@code true} if the vertex is a family member, but is not a child or parent of the current vertex.
recaf-core/src/main/java/software/coley/recaf/services/inheritance/InheritanceVertex.java