Return type OpenSearch\Endpoints\AsyncSearch\Submit of method OpenSearch\Endpoints\AsyncSearch\Submit::setBody() is not covariant with return type static(OpenSearch\Endpoints\AbstractEndpoint) of method OpenSearch\Endpoints\AbstractEndpoint::setBody().

Strict comparison using !== between true and true will always evaluate to false.

Variable $body in isset() always exists and is not nullable.

Strict comparison using !== between true and true will always evaluate to false.

Variable $body in isset() always exists and is not nullable.

Strict comparison using !== between true and true will always evaluate to false.

Variable $body in isset() always exists and is not nullable.

Instanceof between *NEVER* and Traversable will always evaluate to false.

Result of || is always true.