How to expand first names of an entry

Sometimes, one has a BibTeX/biblatex entry with abbreviated short names:
author = {R. Eshuis and A. Norta and O. Kopp and E. Pitkanen},
journal = {{IEEE} Transactions on Services Computing},
title = {Service Outsourcing with Process Views},
year = {2015},
month = {jan},
number = {1},
pages = {136--154},
volume = {8},
publisher = {Institute of Electrical and Electronics Engineers ({IEEE})},
Now, one wants to have the full first names. In case, there is a DOI available, this is as simple as the following steps:
  1. 1.
    Determine the DOI: Switch to the "General" tab and click on "Look up DOI"
    Screenshot of determine DOI
  2. 2.
    Fetch BibTeX data from the DOI: Click on "Get BibTeX data from DOI"
    Screenshot of get BibTeX data from DOI
  3. 3.
    A popup appears. Select which data you want to merge into the existing entry
    Screenshot of Merge Entries Dialog
  4. 4.
    Now the first names are expanded:
    Screenshot of Result