Associates a #GtkSourceLanguage with the buffer.
Note that a #GtkSourceLanguage affects not only the syntax highlighting, but also the [context classes][context-classes]. If you want to disable just the syntax highlighting, see gtksource.buffer.Buffer.setHighlightSyntax.
The buffer holds a reference to language.
a #GtkSourceLanguage to set, or null.
Associates a #GtkSourceLanguage with the buffer.
Note that a #GtkSourceLanguage affects not only the syntax highlighting, but also the [context classes][context-classes]. If you want to disable just the syntax highlighting, see gtksource.buffer.Buffer.setHighlightSyntax.
The buffer holds a reference to language.