@Test
    void testCopyDefaults() {
        assertEquals(DataSize.ofMegabytes(5),
                this.grpcChannelsProperties.getChannel("test").getMaxInboundMessageSize());
        assertEquals(DataSize.ofMegabytes(3),
                this.grpcChannelsProperties.getChannel("test").getMaxInboundMetadataSize());
    }
Tests whether the global property fallback works.
grpc-client-spring-boot-starter/src/test/java/net/devh/boot/grpc/client/config/GrpcChannelPropertiesGlobalTest.java