Symbol getSymbol(
String name,
[LibraryMirror library]
)

Returns a symbol for name. If library is not a LibraryMirror or if name is a private identifier and library is null, throws an ArgumentError. If name is a private identifier, the symbol returned is with respect to library.

The following text is non-normative:

Using this method may result in larger output. If possible, use the const constructor of Symbol or symbol literals.

Source

/**
 * Returns a symbol for [name]. If [library] is not a [LibraryMirror] or if
 * [name] is a private identifier and [library] is [:null:], throws an
 * [ArgumentError]. If [name] is a private identifier, the symbol returned is
 * with respect to [library].
 *
 * The following text is non-normative:
 *
 * Using this method may result in larger output.  If possible, use
 * the const constructor of Symbol or symbol literals.
 */
external static Symbol getSymbol(String name, [LibraryMirror library]);