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Use annotation from the model to create OpenApiInfo
The OASIS OData to OpenApi v3.0 says:
4.2.1 Field title The value of title is the value of the unqualified annotation Core.Description (see [OData-VocCore]) of the main schema or the entity container of the OData service. If no Core.Description is present, a default title has to be provided as this is a required OpenAPI field. 4.2.2 Field version The value of version is the value of the annotation Core.SchemaVersion (see [OData-VocCore]) of the main schema. If no Core.SchemaVersion is present, a default version has to be provided as this is a required OpenAPI field. 4.2.3 Field description The value of description is the value of the annotation Core.LongDescription (see [OData-VocCore]) of the main schema or the entity container. While this field is optional, it prominently appears in OpenAPI exploration tools, so a default description should be provided if no Core.LongDescription annotation is present.
However, the ODL doesn't support "Core.Description" on main schema and Core.SchemaVersion. Once it supports, please update using the annotation.
Schema annotations are not included in the resulting EdmModel after parsing the CSDL. Issue raised in the OData lib https://github.com/OData/odata.net/issues/2530
