public void unrelateAcrossR603From(Statement_c target, boolean notifyChanges) { if (target == null) return; if (IsSupertypeStatement == null) return; // already unrelated if (target != IsSupertypeStatement) { Exception e = new Exception(); e.fillInStackTrace(); CorePlugin.logError("Tried to unrelate from non-related instance across R603", e); return; } if (target != null) { target.clearBackPointerR603To(this); } if (IsSupertypeStatement != null) { m_statement_id = IsSupertypeStatement.getStatement_id(); IsSupertypeStatement = null; target.removeRef(); } }