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@andrey-qlogic, can you please sign the CLA?

A Googler has manually verified that the CLAs look good.

(Googler, please make sure the reason for overriding the CLA status is clearly documented in these comments.)

@andrey-qlogic signed the CLA, but didn't comment with "I signed it!"

I signed it!

@andrey-qlogic, does this fix an issue? If so can, you please add the issue # in the description?

CLAs look good, thanks!

@chingor13 thanks for review, the good point about -1 value.

@chingor13 The comment fixed: Don't add contentOffset when it -1

Closing this as googleapis/google-cloud-java/issues/3822 was fixed by googleapis/google-cloud-java/pull/4170