| treatWarningsAsErrors | false | if we treat warnings as errors Gestalt will fail on any warnings. When set to true it overrides the behaviour in the below configs. |
| treatMissingArrayIndexAsError | false | By default Gestalt will insert null values into an array or list that is missing an index. By enabling this you will get an exception instead |
| treatMissingValuesAsErrors | false | By default Gestalt will not update values in classes not found in the config. Null values will be left null and values with defaults will keep their defaults. By enabling this you will get an exception if any value is missing. |
| treatMissingDiscretionaryValuesAsErrors | true | Sets treat missing discretionary values (optional, fields with defaults, fields with default annotations) as an error. If this is false you will be able to get the configuration with default values or an empty Optional. If this is true, if a field is missing and would have had a default it will fail and throw an exception. |
| dateDecoderFormat | null | Pattern for a DateTimeFormatter, if left blank will use the default for the decoder |
| localDateTimeFormat | null | Pattern for a DateTimeFormatter, if left blank will use the default for the decoder |
| localDateFormat | null | Pattern for a DateTimeFormatter, if left blank will use the default for the decoder |
| substitutionOpeningToken | ${ | Customize what tokens gestalt looks for when starting replacing substrings |
| substitutionClosingToken | } | Customize what tokens gestalt looks for when ending replacing substrings |
| maxSubstitutionNestedDepth | 5 | Get the maximum string substitution nested depth. If you have nested or recursive substitutions that go deeper than this it will fail. |
| nodeIncludeKeyword | $include | The token used to denote a included node. If this is found in a path it will attempt to load the node into the tree at this location. |
| nodeNestedIncludeLimit | 5 | The maximum number of nested Node Includes Gestalt will attempt. If you have nested or recursive Includes that go deeper than this it will fail. |
| observationsEnabled | false | if observations should be enabled. This needs to be used in conjunction with the gestalt-micrometer or other observations library. |
| proxyDecoderMode | CACHE | Either CACHE or PASSTHROUGH, where cache means we serve results through a cache that is never updated or pass through where each call is forwarded to Gestalt to be looked up. |