<itemvalue="Callers that don't need the feature set to be strictly correct can pass in `FeatureSet.latestLanguageVersion()` to enable the default set of features; this is much more performant than using an analysis session, because it doesn't require the analyzer to process the SDK."/>
<itemvalue="[featureSet] determines what set of features will be assumed by the parser. This parameter is required because the analyzer does not yet have a performant way of computing the correct feature set for a single file to be parsed. Callers that need the feature set to be strictly correct must create an [AnalysisContextCollection], query it to get an [AnalysisContext], query it to get an [AnalysisSession], and then call `getParsedUnit`."/>
<itemvalue="If a [resourceProvider] is given, it will be used to access the file system."/>
<itemvalue="If a [path] is provided, it will be used as the name of the file when reporting errors."/>
<itemvalue="Two or more string literals that are implicitly concatenated because of being adjacent (separated only by whitespace). For example ```dart 'Hello ' 'World' ``` While the grammar only allows adjacent strings where all of the strings are of the same kind (single line or multi-line), this class doesn't enforce that restriction. adjacentStrings ::= [StringLiteral] [StringLiteral]+"/>