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'use strict';
const areDiscriminatorValuesEqual = require('./areDiscriminatorValuesEqual');
/** * returns discriminator by discriminatorMapping.value * * @param {Schema} schema * @param {string} value * @api private */
module.exports = function getSchemaDiscriminatorByValue(schema, value) {  if (schema == null || schema.discriminators == null) {    return null;  }  for (const key of Object.keys(schema.discriminators)) {    const discriminatorSchema = schema.discriminators[key];    if (discriminatorSchema.discriminatorMapping == null) {      continue;    }    if (areDiscriminatorValuesEqual(discriminatorSchema.discriminatorMapping.value, value)) {      return discriminatorSchema;    }  }  return null;};