updateTimezonesMap() {
		const sMapAnchor = "TimezoneUtils.mTimezoneAliases2ABAPTimezones = ";
		const iMapStart = this.sUtilsFileContent.indexOf(sMapAnchor);
		const iMapEnd = this.sUtilsFileContent.indexOf(";", iMapStart);

		const mCLDR2ABAPTimezoneMapping = this.getCLDR2ABAPTimezoneMapping();
		const mAlias2SupportedTz = this.mAlias2SupportedTz;
		const mResult = {};
		Object.keys(mAlias2SupportedTz).sort().forEach((sAlias) => {
			const sCLDRTimezone = mAlias2SupportedTz[sAlias];
			const sABAPTimezoneID = mCLDR2ABAPTimezoneMapping[sCLDRTimezone] || sCLDRTimezone;
			// "Etc/Universal" is still used by ABAP, and a translation is generated for it, and it is a valid
			// alias for "Etc/UTC" in the BCP47 data -> do not add it to the map.
			if (sAlias !== sABAPTimezoneID && sAlias !== "Etc/Universal") {
				mResult[sAlias] = sABAPTimezoneID;
			}
		});
		this.sUtilsFileContent = this.sUtilsFileContent.replace(
			this.sUtilsFileContent.slice(iMapStart, iMapEnd),
			sMapAnchor + JSON.stringify(mResult, null, "\t").replace(/\n/g, "\n\t"));
	}
Updates the <code>mTimezoneAliases2ABAPTimezones</code> map in the loaded <code>TimezoneUtils.js</code>
file content.