src/vs/workbench/api/common/extHostTypes.ts/ProcessExecution/constructor
class ProcessExecution:	constructor(process: string, varg1?: string[] | vscode.ProcessExecutionOptions, varg2?: vscode.ProcessExecutionOptions) {
		if (typeof process !== 'string') {
			throw illegalArgument('process');
		}
		this._args = [];
		this._process = process;
		if (varg1 !== undefined) {
			if (Array.isArray(varg1)) {
				this._args = varg1;
				this._options = varg2;
			} else {
				this._options = varg1;
			}
		}
	}