code: async function fetchDatabaseSchemas (client, schemaNames, jsonSchemas, messages) {
    const currentDbStructure = await pgInfo({
      client: client,
      schemas: schemaNames
    })
  
    const expectedDbStructure = await relationize({
      source: {
        schemas: jsonSchemas
      }
    })
  
    return {
      currentDbStructure,
      expectedDbStructure
    }
  }
docs: PostgresqlStorageService