Refactor from(:PdxInstance) factory method to handle PdxInstanceWrapper arguments.

The from(:PdxInstance) method should not wrap a PdxInstance more than once.

Format source code.

apache-geode-extensions/src/test/java/org/springframework/geode/pdx/PdxInstanceWrapperUnitTests.java

@@ -117,6 +117,16 @@ public class PdxInstanceWrapperUnitTests {
 		verifyNoInteractions(mockPdxInstance);
 	}
 
+	@Test
+	public void fromPdxInstanceWrapperIsSameWrapper() {
+
+		PdxInstanceWrapper mockWrapper = mock(PdxInstanceWrapper.class);
+
+		assertThat(PdxInstanceWrapper.from(mockWrapper)).isSameAs(mockWrapper);
+
+		verifyNoInteractions(mockWrapper);
+	}
+
 	@Test
 	public void unwrapPdxInstanceWrapperReturnsPdxInstanceDelegate() {