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: compiled_function.rs
    path of file: ./repos/wasmtime/crates/cranelift-shared/src
    
    the code of the file until where you have to start completion: use crate::{mach_reloc_to_reloc, mach_trap_to_trap, Relocation};
use cranelift_codegen::{
    ir, ir::UserExternalNameRef, isa::unwind::CfaUnwindInfo, isa::unwind::UnwindInfo, Final,
    MachBufferFinalized, MachSrcLoc, ValueLabelsRanges,
};
use wasmtime_environ::{FilePos, InstructionAddressMap, TrapInformation};

/// Trait used in the [CompiledFunction] to resolve the locations of
/// external name references in a compiled function.
pub trait CompiledFuncEnv {
    fn resolve_user_external_name_ref(&self, external: UserExternalNameRef) -> (u32, u32);
}

#[derive(Debug, Clone, PartialEq, Eq, Default)]
/// Metadata to translate from binary offsets back to the original
/// location found in the wasm input.
pub struct FunctionAddressMap {
    /// An array of data for the instructions in this function, indicating where
    /// each instruction maps back to in the 
    
    pub fn set_address_map(&mut self, offset: u32, length: u32, with_instruction_addresses: bool) {
        assert!((offset + length) <= u32::max_value());
        let len = self.buffer.data().len();
        let srclocs = self
            .buffer
            .get_srclocs_sorted()
            .into_iter()
            .map(|&MachSrcLoc { start, end, loc }| (loc, start, (end - start)));
        let instructions = if with_instruction_addresses {
            collect_address_maps(len as u32, srclocs)
        } else {
            Default::default()
        };
        let start_srcloc = FilePos::new(offset);
        let end_srcloc = FilePos::new(offset + length);

        let address_map = FunctionAddressMap {
            instructions: instructions.into(),
            start_srcloc,
            end_srcloc,
            body_offset: 0,
            body_len: len as u32,
        };

        self.metadata.address_map = address_map;
    }