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: mod.rs
    path of file: ./repos/synth/core/src/schema/inference
    
    the code of the file until where you have to start completion: //! # TODO
//! - Put the numerical content upcast logic in the corresponding function-style macro
#![allow(clippy::assertions_on_result_states)]
use anyhow::Result;
use serde_json::{Map, Number, Value};

use std::collections::HashSet;
use std::fmt::Display;

pub mod value;
pub use
    
    fn try_merge(self, master: &mut number_content::I64, candidate: &i64) -> Result<()> {
        match master {
            number_content::I64::Range(range) => self.try_merge(range, candidate),
            number_content::I64::Categorical(cat) => self.try_merge(cat, candidate),
            number_content::I64::Constant(cst) => self.try_merge(cst, candidate),
            I64::Id(id) => self.try_merge(id, candidate),
        }
    }