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    rankdir="TB"
    bgcolor="white"
    fontname="Tahoma"

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        fontname="Tahoma"
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    "docker" [fillcolor="deepskyblue2"];
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    "plugin" [fillcolor="deepskyblue2"];
    "scala-package" [fillcolor="deepskyblue2"];
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    "amalgamation" [fillcolor="deepskyblue2"];
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