The Complete Strapi™ Course with Plugins and Deployment - Extensions: Nexus Versus GraphQL SDL

The video tutorial covers the use of resolvers in GraphQL, focusing on creating extensions with Nexus objects and configuring them. It explains the customization of types using both Nexus syntax and standard SDL, highlighting the differences. The tutorial also discusses extending the schema with type definitions to create new mutations, such as liking posts. Additionally, it covers configuring resolvers, including disabling authorization and applying custom policies and middleware. The next lesson will focus on using type definitions to create custom GraphQL functionality.

Describe the process of creating a new mutation in GraphQL as outlined in the lesson.

What is the significance of the resolvers key in the context of this lesson?