You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: create.rs
    path of file: ./repos/fluvio/crates/fluvio-cli/src/client/topic
    
    the code of the file until where you have to start completion: //!
//! # Create Topics
//!
//! CLI tree to generate Create Topics
//!
use std::path::PathBuf;
use std::time::Duration;

use tracing::debug;
use clap::Parser;
use humantime::parse_duration;
use anyhow::Result;

use fluvio_types::PartitionCount;
use fluvio_types::ReplicationFactor;
use fluvio::metadata::topic::CleanupPolicy;
use fluvio::metadata::topic::ReplicaSpec
    
    pub async fn process(self, fluvio: &Fluvio) -> Result<()> {
        let dry_run = self.dry_run;
        let (name, topic_spec) = self.construct()?;
        validate(&name, &topic_spec)?;

        debug!("creating topic: {} spec: {:#?}", name, topic_spec);
        let admin = fluvio.admin().await;
        admin.create(name.clone(), dry_run, topic_spec).await?;
        println!("topic \"{name}\" created");

        Ok(())
    }