method Command.prototype.getEnvVarRe-exportimport { Command } from "https://deno.land/x/cliffy@v1.0.0-rc.2/command/mod.ts"; getEnvVar(name: string, hidden?: boolean): EnvVar | undefinedGet environment variable by name. Parametersname: stringName of the environment variable. optionalhidden: booleanInclude hidden environment variable. ReturnsEnvVar | undefined