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: methods.rs
    path of file: ./repos/stratisd/src/dbus_api/pool/pool_3_7
    
    the code of the file until where you have to start completion: // This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

use std::collections::HashMap;

use dbus::{arg::Array, Message};
use dbus_tree::{MTSync, MethodInfo, MethodResult};

use crate::{
    dbus_api::{
        consts::filesystem_interface_list,
        types::{DbusErrorEnum, TData, OK_STRING},
        util::{engine_to_dbus_err_tuple, get_next_arg},
    },
    engine::{EngineAction, FilesystemUuid, StratisUuid},
};

pub fn destroy_filesystems(m: &MethodInfo<'_, MTSync<TData>, TData>) -> MethodResult {
    let message: &Message = m.msg;
    let mut iter = message.iter_init();

    let filesystems: Array<'_, dbus::Path<'static>, _> = get_next_arg(&mut iter, 0)?;

    let dbus_context = m.tree.get_data();
    let object_path = m.path.get_name();
    let return_message = message.method_return();
    let default_return: (bool, 
    
pub fn destroy_filesystems(m: &MethodInfo<'_, MTSync<TData>, TData>) -> MethodResult {
    let message: &Message = m.msg;
    let mut iter = message.iter_init();

    let filesystems: Array<'_, dbus::Path<'static>, _> = get_next_arg(&mut iter, 0)?;

    let dbus_context = m.tree.get_data();
    let object_path = m.path.get_name();
    let return_message = message.method_return();
    let default_return: (bool, Vec<String>) = (false, Vec::new());

    let pool_path = m
        .tree
        .get(object_path)
        .expect("implicit argument must be in tree");
    let pool_uuid = typed_uuid!(
        get_data!(pool_path; default_return; return_message).uuid;
        Pool;
        default_return;
        return_message
    );

    let mut guard = get_mut_pool!(dbus_context.engine; pool_uuid; default_return; return_message);
    let (pool_name, _, pool) = guard.as_mut_tuple();

    let mut filesystem_map: HashMap<FilesystemUuid, dbus::Path<'static>> = HashMap::new();
    for path in filesystems {
        if let Some((u, path)) = m.tree.get(&path).and_then(|op| {
            op.get_data()
                .as_ref()
                .map(|d| (&d.uuid, op.get_name().clone()))
        }) {
            let uuid = *typed_uuid!(u; Fs; default_return; return_message);
            filesystem_map.insert(uuid, path);
        }
    }

    let result = handle_action!(
        pool.destroy_filesystems(
            &pool_name,
            &filesystem_map.keys().cloned().collect::<Vec<_>>(),
        ),
        dbus_context,
        pool_path.get_name()
    );
    let msg = match result {
        Ok(uuids) => {
            // Only get changed values here as non-existent filesystems will have been filtered out
            // before calling destroy_filesystems
            let uuid_vec: Vec<String> =
                if let Some((ref changed_uuids, ref updated_uuids)) = uuids.changed() {
                    for uuid in changed_uuids {
                        let op = filesystem_map
                            .get(uuid)
                            .expect("'uuids' is a subset of filesystem_map.keys()");
                        dbus_context.push_remove(op, filesystem_interface_list());
                    }

                    for sn_op in m.tree.iter().filter(|op| {
                        op.get_data()
                            .as_ref()
                            .map(|data| match data.uuid {
                                StratisUuid::Fs(uuid) => updated_uuids.contains(&uuid),
                                _ => false,
                            })
                            .unwrap_or(false)
                    }) {
                        dbus_context.push_filesystem_origin_change(sn_op.get_name());
                    }

                    changed_uuids
                        .iter()
                        .map(|uuid| uuid_to_string!(uuid))
                        .collect()
                } else {
                    Vec::new()
                };
            return_message.append3(
                (true, uuid_vec),
                DbusErrorEnum::OK as u16,
                OK_STRING.to_string(),
            )
        }
        Err(err) => {
            let (rc, rs) = engine_to_dbus_err_tuple(&err);
            return_message.append3(default_return, rc, rs)
        }
    };
    Ok(vec![msg])
}