Changes to Get a single Lettings Instruction

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/lease_start_date to the response with the 200 status

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/lease_term_years to the response with the 200 status

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/material_information/lease_start_date to the response with the 200 status

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/material_information/lease_term_years to the response with the 200 status

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/last_made_available_for_sale_at to the response with the 200 status

added the optional property included/items/anyOf[subschema #2: Property (included)]/allOf[subschema #2]/attributes/last_made_available_to_let_at to the response with the 200 status

added the optional property included/items/anyOf[subschema #5: Person (included)]/allOf[subschema #2]/attributes/preferred_language to the response with the 200 status

added the optional property included/items/anyOf[subschema #6: Valuation (included)]/allOf[subschema #2]/attributes/custom_status_id to the response with the 200 status