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: staticmethodcollector.go
    path of file: ./repos/go-doudou/toolkit/astutils
    
    the code of the file until where you have to start completion: package astutils

import (
	"github.com/sirupsen/logrus"
	"go/ast"
	"go/parser"
	"go/token"
)

// StaticMethodCollector collect methods by parsing source code
type StaticMethodCollector struct {
	Methods    []MethodMeta
	Package    PackageMeta
	expr
    
func NewStaticMethodCollector(exprString func(ast.Expr) string, opts ...StaticMethodCollectorOption) *StaticMethodCollector {
	sc := &StaticMethodCollector{
		Methods:    make([]MethodMeta, 0),
		Package:    PackageMeta{},
		exprString: exprString,
	}
	for _, opt := range opts {
		opt(sc)
	}
	return sc
}