When instancing the plugin with the fromEnv function,
this is the name of the environment variable that you expect to contain
the value for this option. The string value will be passed to the schema as input.
schema
schema:StandardSchemaV1<unknown,unknown>
A Standard Schema-compatible schema,
that can validate and transform the user's configuration into a usable format for the plugin.
When instancing the plugin with the fromEnv function, this is the name of the environment variable that you expect to contain the value for this option. The string value will be passed to the schema as input.