How to use the typer.echo function in typer

def maybe_create_user(username: str):
    if username in existing_usernames:
        typer.echo("The user already exists")
        raise typer.Exit()
    else:
        typer.echo(f"User created: {username}")

def version_callback(value: bool):
    if value:
        typer.echo(f"Awesome CLI Version: {__version__}")
        raise typer.Exit()

def main(birth: datetime):
    typer.echo(f"Interesting day to be born: {birth}")
    typer.echo(f"Birth hour: {birth.hour}")

def main(name: str = typer.Argument("World", hidden=True)):
    """
    Say hi to NAME very gently, like Dirk.
    """
    typer.echo(f"Hello {name}")

def create(username: str):
    typer.echo(f"Creating user: {username}")

def name_callback(value: str):
    typer.echo("Validating name")
    if value != "Camila":
        raise typer.BadParameter("Only Camila is allowed")
    return value

def main():
    delete = typer.confirm("Are you sure you want to delete it?")
    if not delete:
        typer.echo("Not deleting")
        raise typer.Abort()
    typer.echo("Deleting it!")

def create(username: str):
    typer.echo(f"Creating user: {username}")

def main(name: str):
    typer.echo(f"Hello {name}")

def delete():
    typer.echo("Deleting user: Hiro Hamada")