[Android][Volley] Build fixes (#18899) · jpfinne/openapi-generator@989a798

The result of the expression is always 'true' since a value of type 'long' is never equal to 'null' of type 'long?'

The result of the expression is always 'true' since a value of type 'long' is never equal to 'null' of type 'long?'

The result of the expression is always 'true' since a value of type 'DateTime' is never equal to 'null' of type 'DateTime?'

The result of the expression is always 'true' since a value of type 'DateTime' is never equal to 'null' of type 'DateTime?'

The result of the expression is always 'true' since a value of type 'long' is never equal to 'null' of type 'long?'

The result of the expression is always 'true' since a value of type 'long' is never equal to 'null' of type 'long?'

The result of the expression is always 'true' since a value of type 'DateTime' is never equal to 'null' of type 'DateTime?'

The result of the expression is always 'true' since a value of type 'DateTime' is never equal to 'null' of type 'DateTime?'

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