zonghaishang commented on issue #2573: NullPointerException URL: https://github.com/apache/incubator-dubbo/pull/2573#issuecomment-425300460 java.lang.reflect.Method#getParameterTypes: ``` Returns an array of {@code Parameter} objects that represent all the parameters to the underlying executable represented by this object. Returns an array of length 0 if the executable has no parameters. ``` No null pointer exception will thrown.
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