### Question:
PermissionResourceDefinition extends BaseResourceDefinition { @Override public String getSingularName() { return "permission"; } PermissionResourceDefinition(); @Override String getPluralName(); @Override String getSingularName(); @Override Set<SubResourceDefinition> getSubResourceDefinitions();  }### Answer:
@Test public void testGetSingularName() throws Exception { PermissionResourceDefinition permissionResourceDefinition = new PermissionResourceDefinition(); Assert.assertEquals("permission", permissionResourceDefinition.getSingularName()); }