Fixes gh-1098 Support primitive function interfaces

[JunggiKim]

Added support for basic type functions supported by Java

Hello! I've added logic to support Java's basic type function interface

Resolves #1098

[JunggiKim]

I've written two test codes
Failed to include in pull request.
Please check if the test code is correct
If so, should I apply for pull request again?

`

   @Test
public void testPrimitiveFunctionInputTypes() {

	Type type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(IntConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(IntSupplier.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(IntFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToIntFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(ToIntFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(LongConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(LongSupplier.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(LongFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToLongFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(ToLongFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(DoubleConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(DoubleSupplier.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(DoubleFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToDoubleFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getInputType(type))).isAssignableFrom(ToDoubleFunction.class);
}


@Test
public void testPrimitiveFunctionOutputTypes() {
	Type type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(IntConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(IntSupplier.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(IntFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(IntFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToIntFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(ToIntFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(LongConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(LongSupplier.class);


	type = FunctionTypeUtils.discoverFunctionTypeFromClass(LongFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(LongFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToLongFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(ToLongFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleConsumer.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(DoubleConsumer.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleSupplier.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(DoubleSupplier.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(DoubleFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(DoubleFunction.class);

	type = FunctionTypeUtils.discoverFunctionTypeFromClass(ToDoubleFunction.class);
	assertThat(FunctionTypeUtils.getRawType(FunctionTypeUtils.getOutputType(type))).isAssignableFrom(ToDoubleFunction.class);
}

`

[olegz]

Please include the test cases and run a full build.

[JunggiKim]

When I added the test and ran the build, there was no problem! I'm done committing
Sorry for not including the unit test code at first.

[olegz]

Resolves 9282266