30.10.7.4.9, decomposition

This should be used for handling rotary events

IMutableContext

Use this in your EcPrinter implementations.

Result was a success

! @brief return the type of the JSON value (explicit) Return the type of the JSON value as a value from the @ref value_t enumeration.

Return err, or throw a `result_except<Err>` holding the result. Should only be called when <is_err> or <is_ok> has been used to check.

Check if the cache is valid