public static <T> T getInstanceFieldByClassType(Class<T> classType, Object ownerInstance) {
		return TestUtils.getInstanceFieldByClassType(classType, ownerInstance);
	}
Get the first field object contained within object ownerInstance which has the type
classType. This method is only really useful if it is known that only a single field of
classType exists within the ownerInstance.

@param <T> the type
@param classType the class type of the desired field
@param ownerInstance the object instance that owns the field
@return field object of type classType or null
Ghidra/Framework/Generic/src/main/java/generic/test/AbstractGenericTest.java