option('developer_mode', type: 'boolean', value: false, description: 'Enable developer mode' ) option('network_tests', type: 'feature', value: 'disabled', description: 'Enable tests that require network access, if unit_tests are enabled' ) option('tech_preview', type: 'boolean', value: false, description: 'Enable Epiphany Tech Preview branding' ) option('unit_tests', type: 'feature', value: 'enabled', description: 'Enable unit tests' )