related: #1009

in the Echo framework, query binding is performed using the struct tag query, as detailed in Echo's documentation on struct tag binding (https://echo.labstack.com/guide/binding/#struct-tag-binding). If you are using oapi-codegen to generate an Echo server, there isn't an issue because the BindQueryParameter method handles the binding. But if oapi-codegen is only used to generate models, you'll encounter a problem since Echo won't bind query parameters to a field that lacks the query struct tag.

Therefore, I suggest adding the query struct tag. The modified code would look like this:

type FindPetsParams struct {
    Tags *[]string `form:"tags,omitempty" json:"tags,omitempty" query:"tags,omitempty"`

    Limit *int32 `form:"limit,omitempty" json:"limit,omitempty" query:"limit,omitempty"`
}