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use std::error;
use std::fmt;
use std::result;
use super::data::{
Attr, Buff, Container, Effect, FighterAbil, Item, ItemAttr, ItemEffect, ItemFighterAbil, ItemGroup, ItemSkillReq,
MutaAttrMod, MutaItemConv,
};
pub type Result<T> = result::Result<T, Box<dyn error::Error>>;
pub trait DataHandler: fmt::Debug {
fn get_items(&self) -> Result<Container<Item>>;
fn get_item_groups(&self) -> Result<Container<ItemGroup>>;
fn get_attrs(&self) -> Result<Container<Attr>>;
fn get_item_attrs(&self) -> Result<Container<ItemAttr>>;
fn get_effects(&self) -> Result<Container<Effect>>;
fn get_item_effects(&self) -> Result<Container<ItemEffect>>;
fn get_fighter_abils(&self) -> Result<Container<FighterAbil>>;
fn get_item_fighter_abils(&self) -> Result<Container<ItemFighterAbil>>;
fn get_buffs(&self) -> Result<Container<Buff>>;
fn get_item_skill_reqs(&self) -> Result<Container<ItemSkillReq>>;
fn get_muta_item_convs(&self) -> Result<Container<MutaItemConv>>;
fn get_muta_attr_mods(&self) -> Result<Container<MutaAttrMod>>;
fn get_version(&self) -> Result<String>;
}