setFileData(event, post, field, isImage) {
     if (event && event.target.files && event.target.files[0]) {
         const file = event.target.files[0];
         if (isImage && !/^image\//.test(file.type)) {
             return;
         }
         this.dataUtils.toBase64(file, (base64Data) => {
             post[field] = base64Data;
             post[`${field}ContentType`] = file.type;
         });
     }
 }

 return new Promise((resolve, reject) => {
   if (event && event.target && event.target.files && event.target.files[0]) {
     const file = event.target.files[0];
     if (isImage && !/^image\//.test(file.type)) {
       reject(`File was expected to be an image but was found to be ${file.type}`);
     } else {
       const filedContentType: string = field + 'ContentType';
       this.dataUtils.toBase64(file, base64Data => {
         this.editForm.patchValue({
           [field]: base64Data,
           [filedContentType]: file.type
         });
       });
     }
   } else {
     reject(`Base64 data was not set as file could not be extracted from passed parameter: ${event}`);
   }
 }).then(

 openFile(contentType, field) {
     return this.dataUtils.openFile(contentType, field);
 }

 byteSize(field) {
     return this.dataUtils.byteSize(field);
 }

 clearInputImage(field: string, fieldContentType: string, idInput: string) {
     this.dataUtils.clearInputImage(this.valueStream, this.elementRef, field, fieldContentType, idInput);
 }

 setFileData(event, entity, field, isImage) {
     this.dataUtils.setFileData(event, entity, field, isImage);
 }