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: module_environ.rs
    path of file: ./repos/wasmtime/crates/environ/src
    
    the code of the file until where you have to start completion: use crate::module::{
    FuncRefIndex, Initializer, MemoryInitialization, MemoryInitializer, MemoryPlan, Module,
    ModuleType, TableElementExpression, TablePlan, TableSegment, TableSegmentElements,
};
use crate::{
    DataIndex, DefinedFuncIndex, ElemIndex, EntityIndex, EntityType, FuncIndex, GlobalIndex,
    GlobalInit, MemoryIndex, ModuleTypesBuilder, PrimaryMap, TableIndex, TableInitialValue,
    Tunables, TypeConvert, TypeIndex, Unsigned, WasmError, WasmHeapType, WasmResult, WasmValType,
    WasmparserTypeConverter,
};
use std::borrow::Cow;
use std::collections::HashMap;
use std::path::PathBuf;
use std::sync::Arc;
use wasmparser::types::{CoreTypeId, Types};
use wasmparser::{
    CompositeType, CustomSectionReader, DataKind, ElementItems, ElementKind, Encoding,
    ExternalKind, FuncToValidate, FunctionBody, NameSectionReader, Naming, Operator, Parser,
    Payload, TypeRef, Validator, ValidatorResources,
};
use wasmtime_types::ModuleInternedTypeIndex;

/// Object containing the standalone environment information.
pub struct ModuleEnvironment<'a, 'da
    
    fn name_section(&mut self, names: NameSectionReader<'data>) -> WasmResult<()> {
        for subsection in names {
            match subsection? {
                wasmparser::Name::Function(names) => {
                    for name in names {
                        let Naming { index, name } = name?;
                        // Skip this naming if it's naming a function that
                        // doesn't actually exist.
                        if (index as usize) >= self.result.module.functions.len() {
                            continue;
                        }

                        // Store the name unconditionally, regardless of
                        // whether we're parsing debuginfo, since function
                        // names are almost always present in the
                        // final compilation artifact.
                        let index = FuncIndex::from_u32(index);
                        self.result
                            .debuginfo
                            .name_section
                            .func_names
                            .insert(index, name);
                    }
                }
                wasmparser::Name::Module { name, .. } => {
                    self.result.module.name = Some(name.to_string());
                    if self.tunables.generate_native_debuginfo {
                        self.result.debuginfo.name_section.module_name = Some(name);
                    }
                }
                wasmparser::Name::Local(reader) => {
                    if !self.tunables.generate_native_debuginfo {
                        continue;
                    }
                    for f in reader {
                        let f = f?;
                        // Skip this naming if it's naming a function that
                        // doesn't actually exist.
                        if (f.index as usize) >= self.result.module.functions.len() {
                            continue;
                        }
                        for name in f.names {
                            let Naming { index, name } = name?;

                            self.result
                                .debuginfo
                                .name_section
                                .locals_names
                                .entry(FuncIndex::from_u32(f.index))
                                .or_insert(HashMap::new())
                                .insert(index, name);
                        }
                    }
                }
                wasmparser::Name::Label(_)
                | wasmparser::Name::Type(_)
                | wasmparser::Name::Table(_)
                | wasmparser::Name::Global(_)
                | wasmparser::Name::Memory(_)
                | wasmparser::Name::Element(_)
                | wasmparser::Name::Data(_)
                | wasmparser::Name::Tag(_)
                | wasmparser::Name::Unknown { .. } => {}
            }
        }
        Ok(())
    }