Code:
< span [ngClass] = "{"text-green": certified.certifiedEmail}"
[ngbTooltip]="certified?.certifiedEmail?"email is authenticated":"E-email is not authenticated""
[placement]=""bottom""
[tooltipClass]=""my-custom-class"">
<i class="fas fa-envelope fa-2x" data-fa-mask="fas fa-circle"
data-fa-transform="shrink-7"></i>
</span>
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