Add serde to the helper attributes for ToSchema
#1472
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This tells the compiler that the `ToSchema` macro looks at `#[serde]` attributes. Without it, structs annotated with `#[serde]` won't compile unless the struct also derives Serialize or Deserialize. In cases where the Serialize/Deserialize are implemented manually but the schema can still be derived, it may be useful to use serde attributes that don't have a `#[schema]` equivalent, such as `#[serde(untagged)]`.
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See #1471
This tells the compiler that the
ToSchemamacro looks at#[serde]attributes. Without it, structs annotated with#[serde]won't compile unless the struct also derives Serialize or Deserialize.In cases where the Serialize/Deserialize are implemented manually but the schema can still be derived, it may be useful to use serde attributes that don't have a
#[schema]equivalent, such as#[serde(untagged)].