You're seeing just the macro filter, go back to Cqrs.Query module for more information.
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filter(name, type, opts \\ [])

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Defines a Query filter.

  • :name - any atom

  • :type - any valid Ecto Schema type

  • :opts - any valid Ecto Schema field options. Plus:

    • :required - true | false. Defaults to the require_all_filters option.
    • :description - Documentation for the field.