<div class="btn-group list" role="group" aria-label="Basic example">
<button type="button" class="btn btn-primary topology-btn" (click)="onFreeze()"
[class.pinned]="classApplied" placement="top" container="body"
<div class="btn-group list" role="group" aria-label="Basic example">
<button type="button" class="btn btn-primary topology-btn" (click)="onFreeze()"
[class.pinned]="classApplied" placement="top" container="body"