### Question:
JPAEdmEntityContainer extends JPAEdmBaseViewImpl implements JPAEdmEntityContainerView { @Override public JPAEdmBuilder getBuilder() { if (builder == null) { builder = new JPAEdmEntityContainerBuilder(); } return builder; } JPAEdmEntityContainer(final JPAEdmSchemaView view); @Override JPAEdmBuilder getBuilder(); @Override EntityContainer getEdmEntityContainer(); @Override List<EntityContainer> getConsistentEdmEntityContainerList(); @Override JPAEdmEntitySetView getJPAEdmEntitySetView(); @Override JPAEdmAssociationSetView getEdmAssociationSetView(); @Override void clean();  }### Answer:
@Test public void testGetBuilder() { assertNotNull(objJPAEdmEntityContainer.getBuilder()); }
@Test public void testGetBuilderIdempotent() { JPAEdmBuilder builder1 = objJPAEdmEntityContainer.getBuilder(); JPAEdmBuilder builder2 = objJPAEdmEntityContainer.getBuilder(); assertEquals(builder1.hashCode(), builder2.hashCode()); }