default parameter function

[t-ikeda-sti]

User Story

The module author wants to define default values for arguments.

Acceptance Criteria

• Completes arguments from the default keyword in Json Schema.

https://json-schema.org/understanding-json-schema/reference/annotations

The default keyword specifies a default value. This value is not used to fill in missing values during the validation process. Non-validation tools such as documentation generators or form generators may use this value to give hints to users about how to use a value. However, default is typically used to express that if a value is missing, then the value is semantically the same as if the value was present with the default value. The value of default should validate against the schema in which it resides, but that isn't required.

[t-ikeda-sti]

https://json-schema.org/understanding-json-schema/reference/schema#declaring-a-dialect

[t-ikeda-sti]

Implemented.