### Question:
JPAEdmReferentialConstraintRole extends JPAEdmBaseViewImpl implements JPAEdmReferentialConstraintRoleView { @Override public boolean isExists() { return roleExists; } JPAEdmReferentialConstraintRole(final JPAEdmReferentialConstraintRoleView.RoleType roleType,
      final JPAEdmEntityTypeView entityTypeView, final JPAEdmPropertyView propertyView,
      final JPAEdmAssociationView associationView); @Override boolean isExists(); @Override JPAEdmBuilder getBuilder(); @Override RoleType getRoleType(); @Override ReferentialConstraintRole getEdmReferentialConstraintRole(); @Override String getJPAColumnName(); @Override String getEdmEntityTypeName(); @Override String getEdmAssociationName();  }### Answer:
@Test public void testIsExists() { assertTrue(objJPAEdmReferentialConstraintRole.isExists()); }