How can I create line chart in my plugin for Jira?

In general, the question is formulated. I think that need to use ChartFactory and ChartUtils interfaces from com.atlassian.jira.charts to resolve this issue. I found only one example - pie chart. There is no examples about creating line chart, but in my task is nesessary use exactly this type.
Can someone share some examples to create this type of chart?

I’m facing the same challenge of showing line chart. Did you find any answers?

Thanks in advance