core/com.tealium.prism.core.api.data/JsonPathExtractable/extractDouble extractDouble open fun extractDouble(jsonPath: JsonPath<TRoot>): Double?Extracts a nested Double according to the given jsonPath.If any path component is not found, either missing or unexpected type, then null will be returned.ReturnThe required Double if available; else nullParametersjsonPathThe JsonPath describing how to access the variable.