apache / apache/beam

PipelineOptions getters can produce null even if not annotated Nullable when no Default is specified

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bug core good first issue java P2
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Description

Context: BEAM-13537, https://github.com/apache/beam/pull/16625#discussion_r793021931

PipelineOptions getters without Default specified can produce null, but because it happens in generated code, the null checker will not complain about it. Is there some way we can make sure getters without a Default are always Nullable?

Imported from Jira [BEAM-13758](https://issues.apache.org/jira/browse/BEAM-13758). Original Jira may contain additional context.
Reported by: bhulette.

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