Constant GEN_AI_OUTPUT_TYPE 

pub const GEN_AI_OUTPUT_TYPE: &'static str;

Represents the content type requested by the client.

Notes

This attribute SHOULD be used when the client requests output of a specific type. The model may return zero or more outputs of this type. This attribute specifies the output modality and not the actual output format. For example, if an image is requested, the actual output could be a URL pointing to an image file. Additional output format details may be recorded in the future in the gen_ai.output.{type}.* attributes