GraphCommand constructor
GraphCommand()
Implementation
GraphCommand() {
argParser
..addFlag('generated',
abbr: 'g', help: 'Show only generated assets.', defaultsTo: false)
..addFlag('original',
abbr: 'o',
help: 'Show only original source assets.',
defaultsTo: false)
..addOption('package',
abbr: 'p', help: 'Filters nodes to a certain package')
..addOption('pattern', abbr: 'm', help: 'glob pattern for path matching');
}