from https://documentation.magnolia-cms.com/display/DOCS56/Developing+and+rendering+custom+content+blocks
cd my-light-modules
mkdir -p block-examples/blocks
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block-examples/blocks/quote.yaml
class: info.magnolia.editor.block.stock.FieldSetBlockDefinition
templateId: block-examples:blocks/quote
fields:
quotation:
class: info.magnolia.ui.form.field.definition.TextFieldDefinition
rows: 3
citedPerson:
class: info.magnolia.ui.form.field.definition.TextFieldDefinition
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