test_class.file: config/core/src/test/java/org/microbule/config/core/EmptyConfigTest.java
test_class.identifier: EmptyConfigTest
test_class.superclass: extends Assert
test_case.body: @Test
      public void testGroup() {
          assertSame(EmptyConfig.INSTANCE, EmptyConfig.INSTANCE.filtered("whatever"));
      }
test_case.class_method_signature: EmptyConfigTest.testGroup()
test_case.full_signature: @Test public void testGroup()
test_case.identifier: testGroup
test_case.invocations: assertSame filtered
test_case.modifiers: @Test public
test_case.parameters: ()
test_case.return: void
test_case.signature: void testGroup()
focal_class.declarator: INSTANCE = new EmptyConfig()
focal_class.modifier: public static final
focal_class.original_string: public static final Config INSTANCE = new EmptyConfig();
focal_class.type: Config
focal_class.var_name: INSTANCE
focal_class.file: config/core/src/main/java/org/microbule/config/core/EmptyConfig.java
focal_class.identifier: EmptyConfig
focal_class.interfaces: implements Config
focal_class.class_method_signature: EmptyConfig.filtered(String... paths)
focal_class.full_signature: @Override public Config filtered(String... paths)
focal_class.identifier: filtered
focal_class.modifiers: @Override public
focal_class.parameters: (String... paths)
focal_class.return: Config
focal_class.signature: Config filtered(String... paths)
focal_class.class_method_signature: EmptyConfig.value(String key)
focal_class.full_signature: @Override public Optional<String> value(String key)
focal_class.identifier: value
focal_class.modifiers: @Override public
focal_class.parameters: (String key)
focal_class.return: Optional<String>
focal_class.signature: Optional<String> value(String key)
focal_method.body: @Override
      public Config filtered(String... paths) {
          return this;
      }
focal_method.class_method_signature: EmptyConfig.filtered(String... paths)
focal_method.full_signature: @Override public Config filtered(String... paths)
focal_method.identifier: filtered
focal_method.modifiers: @Override public
focal_method.parameters: (String... paths)
focal_method.return: Config
focal_method.signature: Config filtered(String... paths)