How to use the strapi-utils.convertRestQueryParams function in strapi-utils

function find(params, populate) {
    const populateOpt = populate || defaultPopulate;

    const filters = convertRestQueryParams(params);

    return buildQuery({
      model,
      filters,
      populate: populateOpt,
    }).then(results =>
      results.map(result => (result ? result.toObject() : null))
    );
  }

function count(params = {}) {
    const { where } = convertRestQueryParams(params);

    return model.query(buildQuery({ model, filters: { where } })).count();
  }

function find(params, populate) {
    const filters = convertRestQueryParams(params);

    return model
      .query(buildQuery({ model, filters }))
      .fetchAll({ withRelated: populate || defaultPopulate })
      .then(results => results.toJSON());
  }

function find(params, populate) {
    const populateOpt = populate || defaultPopulate;

    const filters = convertRestQueryParams(params);

    return buildQuery({
      model,
      filters,
      populate: populateOpt,
    });
  }

find: async function(params, populate) {
    const model = this;
    const filters = convertRestQueryParams(params);

    return buildQuery({
      model,
      filters,
      populate: populate || model.associations.map(x => x.alias),
    }).lean();
  },

count(params = {}) {
    const { where } = convertRestQueryParams(params);

    return model.query(buildQuery({ model, filters: { where } })).count();
  },

find(params, populate) {
    const filters = convertRestQueryParams(params);

    return model
      .query(buildQuery({ model, filters }))
      .fetchAll({
        withRelated: populate || model.associations.map(x => x.alias),
      })
      .then(data => data.toJSON());
  },

find: async function(params, populate) {
    const model = this;

    const filters = convertRestQueryParams(params);

    return this.query(buildQuery({ model, filters }))
      .fetchAll({
        withRelated: populate || this.associations.map(x => x.alias)
      })
      .then(data => data.toJSON());
  },

count: async function(params = {}) {
    const model = this;

    const { where } = convertRestQueryParams(params);

    return this.query(buildQuery({ model, filters: { where } })).count();
  },