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//If you already know the Entity metadata has been loaded, which is assured in Form Template Layout controls or in a client-side Generic Entity plug-in, you can use findByName, which is a synchronous call.  If you can't be sure, you need to use the loadEntity method and provide a callback, which turns the operation into an asynchronous operation.
 
//Get the Persons Entity metadata object and store it in personsMD.
var personsMD = Aptify.framework.metaData.entities.findByName('Persons');
 
var personsLocalizedDisplayName = personsMD.displayNameLocalized;
 
//Get the NameWCompany Entity Field metadata object from the Persons Entity Metadata.
var nameWCompanyFieldMD = personsMD.fields.findByName('NameWCompany');
 
var nameWCompanyLocalizedDisplayName = nameWCompanyFieldMD.displayNameLocalized;